Research Article Validity and Reliability of Farsi Version of Youth Sport Environment Questionnaire Mohammad Ali Eshghi, 1 Ramin Kordi, 2 Amir Hossein Memari, 2 Ahmad Ghaziasgar, 2 Mohammad-Ali Mansournia, 3 and Seyed Hojjat Zamani Sani 4 1 Exercise Physiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran 2 Sports Medicine Research Center, Tehran University of Medical Sciences, P.O. Box 14395-578, Tehran, Iran 3 Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 4 Faculty of Physical Education and Sport Sciences, Shahid Beheshti University, Tehran, Iran Correspondence should be addressed to Amir Hossein Memari; amirmemari@farabi.tums.ac.ir Received 23 May 2015; Revised 13 July 2015; Accepted 15 July 2015 Academic Editor: Laura Guidetti Copyright © 2015 Mohammad Ali Eshghi et al. Tis is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Te Youth Sport Environment Questionnaire (YSEQ) had been developed from Group Environment Questionnaire, a well-known measure of team cohesion. Te aim of this study was to adapt and examine the reliability and validity of the Farsi version of the YSEQ. Tis version was completed by 455 athletes aged 13–17 years. Results of confrmatory factor analysis indicated that two-factor solution showed a good ft to the data. Te results also revealed that the Farsi YSEQ showed high internal consistency, test-retest reliability, and good concurrent validity. Tis study indicated that the Farsi version of the YSEQ is a valid and reliable measure to assess team cohesion in sport setting. 1. Introduction Team cohesion is one of the key concepts within sport teams that has received substantial research attention over the last three decades [1, 2]. Team cohesion is defned as a dynamic process addressing the propensity for a team to bond together and remain integrated in chasing their purposes [3]. Team cohesion is directly associated with other main sport mea- sures such as collective efcacy, performance, and achieve- ment. Carron et al. [4] presented the frst conceptual model of team cohesion in Group Environment Questionnaire (GEQ) including two categories: team integration and individual attraction to the team. Each category was divided into two subcategories known as social cohesion and task cohesion. Social cohesion was related to the extent team athletes adhere together to show appropriate social relationships, while task cohesion is indicative of joint efort among team members in order to reach specifc team goals [5, 6]. Te usefulness of the GEQ has been frequently examined. Researchers have assessed factor structure and construct validity of the GEQ across diferent cultures [7–9]. Results have questioned the validity of the GEQ for young individuals as whether the GEQ is generalizable to young athletes’ popu- lation [10]. Seeking to answer the question, researchers exam- ined the appropriateness of the GEQ items for youth athletes and revised questions to outft if necessary. Accordingly, Eys et al. [11] developed a cohesion questionnaire for exclusively investigating young athletes (≤17) named the Youth Sport Environment Questionnaire (YESQ). Eys et al. [11] and other researchers believed that original conceptualization of GEQ might not be relevant to the young population [12, 13]. Since the developmental variables play a critical role in perceptions of youth about their peer interactions and relationships, team experiences in young athletes become increasingly diverse, complex, and integrated through developmental process [14]. Consequently and of relevance to the current study, Eys et al. [11] believed that young athletes may not perceive group unity from two aspects of team integration and individual attraction to the team but instead identify an unidimensional model of team cohesion. Furthermore, Eys et al. [11] emphasized item wording to increase readability and decrease response bias in younger individuals. Eys et al. [15] Hindawi Publishing Corporation Journal of Sports Medicine Volume 2015, Article ID 985283, 5 pages http://dx.doi.org/10.1155/2015/985283